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Consolidated Statements of Shareholders' Equity - USD ($)
Common Class A [Member]
Common Stock [Member]
Common Class A [Member]
Common Class B [Member]
Common Stock [Member]
Common Class B [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2022 $ 5,000   $ 1,000   $ 11,407,000 $ (58,000) $ 4,781,000 $ 16,136,000
Balance (in Shares) at Dec. 31, 2022 5,233,568   762,612          
Three months ending March 31, 2023 (unaudited)                
Consolidated net income             762,000 762,000
Other comprehensive income (loss)           (1,000)   (1,000)
Amortization of stock based compensation         2,000     2,000
Cash dividends             (300,000) (300,000)
Balance at Mar. 31, 2023 $ 5,000   $ 1,000   11,409,000 (59,000) 5,243,000 16,599,000
Balance (in Shares) at Mar. 31, 2023 5,233,568   762,612          
Balance at Dec. 31, 2023 $ 5,000   $ 1,000   11,474,000 (61,000) 5,424,000 16,843,000
Balance (in Shares) at Dec. 31, 2023 5,258,568 5,258,568 762,612 762,612        
Three months ending March 31, 2023 (unaudited)                
Consolidated net income             552,000 552,000
Other comprehensive income (loss)           8,000   8,000
Amortization of stock based compensation         4,000     4,000
Cash dividends             (301,000) (301,000)
Balance at Mar. 31, 2024 $ 5,000   $ 1,000   $ 11,478,000 $ (53,000) $ 5,675,000 $ 17,106,000
Balance (in Shares) at Mar. 31, 2024 5,258,568 5,258,568 762,612 762,612